These thematic pictures of കലണ്ടർ are analogous to a visual dictionary. The theme "കലണ്ടർ" splits into several parts. For children, especially toddlers from 1 to 5 years old, it is better to divide the sets of cards over several days, or even weeks, so the information is absorbed better. Especially it is true if you are using flashcards to learn the malayalam language, which is not your native language.
To expand your malayalam language vocabulary on the "കലണ്ടർ" topic, flashcards games are the best way: